DescriptionD: Wire diameter before weaving, in mm
W: (Aperture) Space between adjacent parallel wires in mm
P: Distance between the centers of two adjacent wire, in mm
Warp: wires running lenthwise in the cloth as woven
Weft: wires running crosswise in the cloth as woven
Open area: Factional open surface area of the wire cloth in the flow direction (applicable for square meshes only). Mesh: 25.4/(D+W)

Plain Weave-The most commonly used weave

Each weft wire passes alternatively over and under each warp wire and vice versa.

Warp adn weft wire diameters are usually the same.

Twill Weave

Stroner than plain weave. Each weft wire alternatively crosses over two, then under two warp wires. Twill weave is usually used to accomnadate a heavier wire diameter than standard in associaition with a given mesh and it's more deformable to mechanical pressure.